Global Patent Index - EP 1035797 A2

EP 1035797 A2 2000-09-20 - NON-PROGRAMMABLE AUTOMATED HEART RHYTHM CLASSIFIER

Title (en)

NON-PROGRAMMABLE AUTOMATED HEART RHYTHM CLASSIFIER

Title (de)

AUTOMATISCHES HERZRYTHMUS KLASSIERGERÄT OHNE PROGRAMMIERERMÖGLICHKEIT

Title (fr)

CLASSIFICATEUR AUTOMATISE NON PROGRAMMABLE DE RYTHME CARDIAQUE

Publication

EP 1035797 A2 (EN)

Application

EP 98961861 A

Priority

  • US 9825509 W
  • US 98236297 A

Abstract (en)

[origin: WO9927850A2] A non-programmable automated heart rhythm classifier that may be used alone or in conjunction with a therapy system for delivering shock treatment or therapeutic drugs to a patient, a monitoring or recording system, a paging or alarm system, or other rhythm classifying device. The non-programmable heart rhythm classifier is used to determine whether a patient's heart rhythm is normal, monomorphic tachycardia or polymorphic tachycardia from extracted features of the cardiac signal of a patient's heart. The extracted features are cycle length and regularity, and preferably with the addition of morphology. Prior to feature extraction, the cardiac electrical signal is conditioned with a signal conditioning system. The classifier may comprise a trained neural network or a trained discriminant function, which has been previously trained by a known set of classified heart rhythm data. Morphology can be estimated by kurtosis or from the probability density function. Regularity can be determined from approximate entropy, information dimension, correlation dimension or from Lyapunov's exponents of the patient's cardiac electrical signal. In yet another embodiment of the invention, adaptive sampling may be utilized to selectively digitize the cardiac electrical signal before classification occurs.

IPC 1-7 (main, further and additional classification)

A61B 5/02

IPC 8 full level (invention and additional information)

A61B 5/0464 (2006.01); G06F 17/00 (2006.01); A61B 5/0428 (2006.01)

CPC (invention and additional information)

A61B 5/0464 (2013.01); A61B 5/7267 (2013.01); A61B 5/0428 (2013.01)

Designated contracting state (EPC)

DE FR IT

EPO simple patent family

WO 9927850 A2 19990610; WO 9927850 A3 19990812; CA 2313023 A1 19990610; EP 1035797 A2 20000920; EP 1035797 A4 20021023; US 6192273 B1 20010220

INPADOC legal status


2007-01-10 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20060701

2002-10-23 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20020910

2002-10-23 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): DE FR IT

2002-10-16 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7A 61B 5/02 A, 7G 06F 17/00 B

2000-09-20 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000626

2000-09-20 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): DE FR IT